| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | 22 Feb 2022 | 18 Feb 2022 | 000-22182 | |
| 4 | Open Document | Open Filing | 10 May 2021 | 07 May 2021 | 000-22182 | |
| 4 | Open Document | Open Filing | 18 Dec 2020 | 16 Dec 2020 | 000-22182 | |
| 4 | Open Document | Open Filing | FORM 4 | 06 May 2015 | 04 May 2015 | 000-22182 |